Hi. I'm pretty new to thumper and was was wondering if someone could please help me out m. I have a 2012 kx450f and it's leaking a little bit of oil from the drain plug it's not horrible but I'm a perfectionist. I was just want to know if that's common once the bolt gets old. The case don't seem to be stripped. I noticed the drain bolt has no seal or nothing on it it's just a bolt with a built In washer? I just want to know if you guys think a new drain plug will fix it?